Rush Manbert <rush@manbert.com> writes:
I am replacing a pthread threading implementation with a boost threads implementation so I can use the code on Windows.
class ReadWriteMutex { public: ReadWriteMutex(); virtual ~ReadWriteMutex() {}
// these get the lock and block until it is done successfully virtual void acquireRead() const; virtual void acquireWrite() const;
// these attempt to get the lock, returning false immediately if they fail virtual bool attemptRead() const; virtual bool attemptWrite() const;
// this releases both read and write locks virtual void release() const;
Note the release() method that works for a thread that holds either the read or write lock.
AFAICT there is no equivalent to the pthread_rwlock_unlock() call that the original version of release() called.
Am I missing something?
No, this is correct --- you must explicitly call unlock() or unlock_shared() depending on what sort of lock you have. Anthony -- Author of C++ Concurrency in Action | http://www.manning.com/williams just::thread C++0x thread library | http://www.stdthread.co.uk Just Software Solutions Ltd | http://www.justsoftwaresolutions.co.uk 15 Carrallack Mews, St Just, Cornwall, TR19 7UL, UK. Company No. 5478976